I like this idea. I was thinking about something similar. My local library has a tool lending program that allows community members to checkout equipment for a period of time. It's a great alternative to buying expensive equipment that you may only use once. Another big plus is the community connection-- Meeting neighbors who have the knowledge to help teach you how to use the tools properly.
To push a step further, I was thinking of this as an initiator for community-based projects-- fixing the sidewalk on the local commercial street or cleaning up a community park. Also, perhaps this could be a jumping off point for reclamation projects. I thought this was a great idea http://www.openideo.com/open/vibrant-cities/concepting/reclaimed-in-detroit/ And a project like tool swapping could offer another avenue to engage the community to participate.